From: lyz <lyz@rock-chips.com>
Date: Mon, 17 Dec 2012 08:00:21 +0000 (+0800)
Subject: rk2928: usb: fix rk2928/2926 usb phy non-driving err
X-Git-Tag: firefly_0821_release~8099^2~7
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6bd8d00fbbdee80cd190b1c07a37255c32c3b283;p=firefly-linux-kernel-4.4.55.git

rk2928: usb: fix rk2928/2926 usb phy non-driving err
---

diff --git a/arch/arm/mach-rk2928/common.c b/arch/arm/mach-rk2928/common.c
index 7fd56af79725..2e33b601ef7c 100755
--- a/arch/arm/mach-rk2928/common.c
+++ b/arch/arm/mach-rk2928/common.c
@@ -129,8 +129,16 @@ void __init rk2928_map_io(void)
 	rk2928_map_common_io();
 #ifdef DEBUG_UART_BASE
         #ifdef CONFIG_RK_USB_UART
-        writel_relaxed(0x007f0051, RK2928_GRF_BASE + GRF_UOC0_CON5);
-        writel_relaxed(0x34003000, RK2928_GRF_BASE + GRF_UOC1_CON4);
+        if(!(readl_relaxed(RK2928_GRF_BASE + 0x014c) & (1<<7)))//detect vbus
+        {
+            writel_relaxed(0x10001000, RK2928_GRF_BASE + GRF_UOC0_CON0);
+            writel_relaxed(0x007f0055, RK2928_GRF_BASE + GRF_UOC0_CON5);
+            writel_relaxed(0x34003000, RK2928_GRF_BASE + GRF_UOC1_CON4);
+        }   
+        else
+	    {
+            writel_relaxed(0x34000000, RK2928_GRF_BASE + GRF_UOC1_CON4);
+	    }
         #else
         writel_relaxed(0x34000000, RK2928_GRF_BASE + GRF_UOC1_CON4);
         #endif
diff --git a/drivers/usb/dwc_otg/usbdev_rk2928.c b/drivers/usb/dwc_otg/usbdev_rk2928.c
index 6f70546cb0a0..452001c7cd1c 100755
--- a/drivers/usb/dwc_otg/usbdev_rk2928.c
+++ b/drivers/usb/dwc_otg/usbdev_rk2928.c
@@ -114,11 +114,14 @@ void usb20otg_phy_suspend(void* pdata, int suspend)
 {
     struct dwc_otg_platform_data *usbpdata=pdata;
     unsigned int * otg_phy_con1 = (unsigned int*)(USBGRF_UOC0_CON5);
+    unsigned int * otg_phy_con2 = (unsigned int*)(USBGRF_UOC0_CON0);
     if(suspend){
+        *otg_phy_con2 = (1<<12 | 1<<(12+16));//otg io set to High-Z state
         *otg_phy_con1 = 0x55 |(0x7f<<16);   // enter suspend.
         usbpdata->phy_status = 1;
     }
     else{
+        *otg_phy_con2 = 1<<(12+16);
         *otg_phy_con1 = (0x01<<16);    // exit suspend.
         usbpdata->phy_status = 0;
     }
@@ -268,11 +271,14 @@ void usb20host_phy_suspend(void* pdata, int suspend)
 {
     struct dwc_otg_platform_data *usbpdata=pdata;
     unsigned int * otg_phy_con1 = (unsigned int*)(USBGRF_UOC1_CON5);
+    unsigned int * otg_phy_con2 = (unsigned int*)(USBGRF_UOC1_CON0);
     if(suspend){
+        *otg_phy_con2 = (1 << 12 | 1 << (12+16));//host io set to High-Z state
         *otg_phy_con1 = 0x1D5 |(0x1ff<<16);   // enter suspend.
         usbpdata->phy_status = 1;
     }
     else{
+        *otg_phy_con2 = (1 << 12+16);//host io exit High-Z state
         *otg_phy_con1 = (0x01<<16);    // exit suspend.
         usbpdata->phy_status = 0;
     }